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Sismes-tetes getest ffies.

SAMUEL C. vRUNDLE'H, OF PORTLAND, MINE-- Leners Patent No. 63,180, datedMarch 26, 1867.

`stress Por. SAND', es.

TO ALL WH'OM I' MAY CONCERN:

ABe it known that I', SAMUEL C. RUNDLETT, of Portland, 'in the county ofCumberland, and State of Maxine,

hnveinvented anew and yuseful Improved Sifter; the sieve being moreparticularly intended for sifting sand for the purpose of mixing mortar;and I hercbydeclare the following vto be o full; clear, and exactdescription thereof,\vhich will enable others to make and use myinvention, referencebeing had tthe accompanying drawings, forming partof this specification, in whieh Figure l is an end elevation of myinvention.

FignreQ, n top plan and view ofthe sume. i

The operating parts of my. invention 'are set upon o. frame, seen at Ain the drawings. yUpon two of the horizontal beams of this'frameiis setthe shaft B, with .its crztnk a by which it is'turned. Upon the otherend of the shaft B4 are atta-cbed'tbe following devices: crank b,connecting-rod Vc, bell-crankf, and nrm g. An additional andsinnllerfrnme is placed upon the one already described; this is seen atD. Into this is set theliopper L, :is Seen in flg. 1i Upon two ofthehorizontal beams of the frame D are suspendedl the four chains or rodsz',.

to which, at their lower ends, is attached a sicve,j. This sieve cnnthusA be easily swung from side to side,A being made somewhat narrowerthan the width ofthe frame A. The armyis attached to the sieve at thecentre of one of its sides, (see figi2.) The object of this is to givethe sieve a lateral motion, and so that it will strike' at everymovement on the inner sides of the frnme cshows the mouth ofthe siftersomewhat inc-lined, as is the whole ofthe sift-er, and made of solidmaterial, ns wood, for instance. The operation of my invention is asfollows: Tiirn the shaft by the crank a; this drawsbackwn'rd andlforwardthe connecting-rod@which in'its turn l moves the bell-crank f on itspivot 11. Thebell-crank being'c'onnected with the arm g at oismoved'inwurd and outward alternatelyand thus swings the sitter from sideto; side, striking each side of the frame A as before specied.- Thus thesand will be slinken through the i'nterstices of the sieve, while thegra-vel and coarserparticlesxf'ollowing the inclination of the sievebottom, will roll forward to the mouth of the sieve and drop to theground from the mouth nt c. It is evident by the use of proper geur thatgreater rapidity of motion can be imparted to the sieve. A slide is.constructed in the bottom of 'the hopper to regulate the supply of sand,the., to the sieve. I donot cla-im a dumping or tilting sieve, providedwith n. movable tail-piece, so arranged that the tipping of the sieveopens the side thereof for the passage of the substance sifted; neitherdo I claim a'cotnbination of two scrolls and two cams to give a'backwardand forward motion tothe sieve; neither do I claim a series of sieves incombination with suitable mechanism for imparting a shaking motion tothesame, which described devices are exhibited in Patents No. 26,474,December 20, 1859,and No. 53,295,'Mnrch 20, 1866,`

respectively. My invention'lditl'ers from those inthe followingparticulars, viz, that the siev'ej is suspended -by four rods or chains'z', that itlis swung from side to side, and at each motion is struckagainst the inner side of the frame A, as before specied, the object ofwhich' is toacceleratehe passage of the sand through the sieve as Wellas the progress of the coerse'r particles down the inclined bottom ofthe sieve until they fall therefrom to the ground. YI ern not aware ofthe existence of any sieve thus suspended from'its four corners and thusoperating, without the employment of a pirot or some equivalent means,What I claim as my invention, and desireto secure by Letters Patent, isThe sieve j, when suspended'by lthe four chains z', end-so operated bythe means hereinbefore described as toswing from side to side, andateach motion to strike the -inner side of the frame A, as and .for thepurposes specified.

SAMUEL C. RUNDLETT.

Witnesses: i

WILLIAM HENRY CLIFFORD, HENRY Cv. HOUSTON.

